I have been working on my 89 chev s-10 blazer for a few months now . I have replace the fuel filter, pump and sending unit, fuek relay, battery, plugs/wires, distributor, cap/rotor.I think that about covers it. I even timed it. And after all that it wants to start but won't. and when I do turn it over it drains the battery. WHAT THE HECK!!!! Help!!!!!